基于Kanai-Tajimi/Clough-Penzien模型时MTMD的动力特性被引量：10

DYNAMIC CHARACTERISTICS OF MTMD BASED ON KANAI0TAJIMI/CLOUGH-PENZIEN MODELS

下载PDF

导出

摘要研究了由许多刚度和阻尼保持常量且频率呈线性分布的TMD形成的MTMD的地震特性。基于虚拟激励法和Kanai_Tajimi及Clough_Penzien地震谱 ,建立了结构 -MTMD系统的传递函数和动力放大系数 (DMF)。于是MTMD的优化准则定义为Min .Min .Max .DMF。通过最优搜寻得MTMD的最优频率间隔、平均阻尼比、调谐频率比和相应的控制有效性指标。考虑结构受控频率与场地土卓越频率比的不同取值 ,研究场地土卓越频率对MTMD最优参数及有效性的影响。 Seismic behavior of multiple tuned mass dampers(MTMD),which keep the stiffness and damping constant and have a uniform distribution of natural frequencies,is studied in the present paper.Based on both the pseudo_excitation approach and the Kanai_Tajimi and Clough_Penzien Spectrums,the transfer function and corresponding dynamic magnification factor(DMF) for the structure with MTMD are formulated.The criterion for the optimum searching is then the minimization of the minimum values of DMF(i.e.Min.Min.Max.DMF).Through the optimum searching.one may obtain the optimum frequency spacing,average damping ratio,tuning frequency ratio,and corresponding index representing the control effectiveness.Employing the different ratio values of the structural frequency of the mode to be mitigated to the dominant ground frequencies,a study is carried out on the influence of the dominant ground frequencies on the MTMD optimum parameters and its effectiveness.

作者李春祥熊学玉

机构地区上海交通大学建筑工程与力学学院同济大学土木工程学院

出处《振动与冲击》 EI CSCD 北大核心 2002年第4期39-43,共5页 Journal of Vibration and Shock

关键词 Kanai-Tajimi/Clough-Penzien模型 MTMD 动力特性多重调谐质量阻尼器地震特性控制有效性指标场地上卓越频率 multiple tuned mass dampers,Min.Min.Max.DMF,optimum parameters,control effectiveness index,dominant ground frequencies

分类号 P315.9 [天文地球—地震学]

引文网络
相关文献

参考文献6

1Xu K,Igusa T.Dynamic characteristics of multiple substructures with closely spaced frequencies Earthquake Engineering and Structural Dynamics 1992;21:1059-1070
2Yamaguchi H,Harmpornchai N.Fundamental characteristics of multiple tuned mass dampers for suppressing harmonically forced oscillators.Earthquake Engineering and Structural Dynamics 1993;22:51-62
3Jangid R S.Optimum multiple tuned mass dampers for base-excited undamped system.Earthquake Engineering and Structural Dynamics 1999;28:1041-1049
4Li Chunxiang.Performance of multiple tuned mass dampers for attenuating undesirable oscillations of structures under the ground acceleration.Earthquake Engineering and Structural Dynamics 2000;29:1405-1421
5Li Chunxiang.Optimum multiple tuned mass dampers for structures under the ground acceleration based on DDMF and ADMF.Earthquake Engineering and Structural Dynamics 2002;31:897-919
6Lin J H,Zhang W S.Structural responses to arbitrarily coherent stationary random excitations.Computer and Structures 1994;50:629-633